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Is it better practice to use String.format over string Concatenation in Java?
... localised and have the name and time tokens swapped without requiring a recompile of the executable to account for the different ordering. With argument positions you can also re-use the same argument without passing it into the function twice:
String.format("Hello %1$s, your name is %1$s and the ...
TDD vs. Unit testing [closed]
My company is fairly new to unit testing our code. I've been reading about TDD and unit testing for some time and am convinced of their value. I've attempted to convince our team that TDD is worth the effort of learning and changing our mindsets on how we program but it is a struggle. Which bring...
Difference between java.lang.RuntimeException and java.lang.Exception
...ccur if you check the index first. RuntimeException are not checked by the compiler, so it is clean code.
EDIT : These days people favor RuntimeException because the clean code it produces. It is totally a personal choice.
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Fastest way to tell if two files have the same contents in Unix/Linux?
...e data or not. I do this a for a lot of files, and in my script the diff command seems to be the performance bottleneck.
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Design Pattern for Undo Engine
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Most examples I've seen use a variant of the Command-Pattern for this. Every user-action that's undoable gets its own command instance with all the information to execute the action and roll it back. You can then maintain a list of all the commands that have been execut...
What's the difference between the 'ref' and 'out' keywords?
...
ref tells the compiler that the object is initialized before entering the function, while out tells the compiler that the object will be initialized inside the function.
So while ref is two-ways, out is out-only.
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How to exclude a module from a Maven reactor build?
...iles like this:
<project>
...
<modules>
<module>common</module>
<module>foo</module>
<module>bar</module>
<modules>
...
<profiles>
<profile>
<id>expensive-modules-to-build</id>
<mo...
In mocha testing while calling asynchronous function how to avoid the timeout Error: timeout of 2000
...elying on timeouts are fragile, and all my tests run in a few ms, but I do come across the same issue when using sinon-test. Still use lambdas 99% of the time.
– oligofren
Jun 12 '17 at 22:01
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How can I resize an image using Java?
...= scaledBI.createGraphics();
if (preserveAlpha) {
g.setComposite(AlphaComposite.Src);
}
g.drawImage(originalImage, 0, 0, scaledWidth, scaledHeight, null);
g.dispose();
return scaledBI;
}
...
Linux equivalent of the Mac OS X “open” command [closed]
I've found the "open" command in Mac OS X very handy in the command line. From "man open":
7 Answers
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